linux-kernel - Re: [PATCH net v2] Revert "virtio-net: ethtool configurable RXCSUM"

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Message-ID: <20201020073651-mutt-send-email-mst@kernel.org>
Date:   Tue, 20 Oct 2020 07:45:09 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Tonghao Zhang <xiangxia.m.yue@...il.com>,
        Willem de Bruijn <willemb@...gle.com>,
        kernel test robot <lkp@...el.com>,
        Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Subject: Re: [PATCH net v2] Revert "virtio-net: ethtool configurable RXCSUM"

On Mon, Oct 19, 2020 at 12:15:00PM -0700, Jakub Kicinski wrote:
> On Mon, 19 Oct 2020 13:32:12 -0400 Michael S. Tsirkin wrote:
> > This reverts commit 3618ad2a7c0e78e4258386394d5d5f92a3dbccf8.
> > 
> > When the device does not have a control vq (e.g. when using a
> > version of QEMU based on upstream v0.10 or older, or when specifying
> > ctrl_vq=off,ctrl_rx=off,ctrl_vlan=off,ctrl_rx_extra=off,ctrl_mac_addr=off
> > for the device on the QEMU command line), that commit causes a crash:
> 
> Hi Michael!
> 
> Only our very first (non-resend) version got into patchwork:
> 
> https://patchwork.ozlabs.org/project/netdev/list/?submitter=2235&state=*
> 
> Any ideas why?

I really don't! Any ideas?

-- 
MST